How many neutrons are in radon?

A liquid that occupies a volume of 2.68L has a mass of 2.40 kg. What is the density of the liquid in kg/L?

Which tool was most likely used in a procedure if the lab report shows that approximately 300ml of water was used

Which of the following are likely to form an ionic bond? 1) two carbon atoms 2) carbon and hydrogen atoms 3) sodium and fluorine atoms 4) two silver atoms

Suppose you want to do an experiment to hear how three different objects would sound when you dropping them the same distance. you drop a pebble a rock, and a grain of sand. what are the variables of your experiment

Chemists can use moles to calculate: A. How much of the products are needed and how much reactant will be made. B. How much product will be made, but not how much of the reactants are needed. C.

The electron configuration for an atom is 1s22s22p2. How many electrons does the atom have? 4 2 6 5

When a piece of sodium carbonate reacts with dilute HCl, a gas X is produced. When gas X is passed through lime water then the solution turns milky and a white precipitate Y is formed a. Write the chemical formula of X, Y and (3) b.

Would precipitation occur when 500 mL of a 0.02M solution of AgNO3 is mixed with 500 mL of a 0.001M solution of NaCl? Show your work.

What compound is always part of an aqueous solution?

How did scientists carry out research before and after the scientific revolution?